    18  cluster-06
     1  O      0.726240   -1.383720   -0.376010      1       2       3
     2  H     -0.025170   -0.828120   -0.611270      2       1
     3  H      1.456460   -1.010910   -0.922600      2       1
     4  O     -1.323580    0.387070   -0.825500      1       5       6
     5  H     -1.923060    0.698400   -1.547540      2       4
     6  H     -1.173230    1.183790   -0.294770      2       4
     7  O      0.836890   -1.040680    2.427980      1       8       9
     8  H      1.024420   -1.239610    1.461440      2       7
     9  H      1.409530   -1.677400    2.826950      2       7
    10  O      2.765280    0.338510   -1.504840      1       11      12
    11  H      2.833770    0.809320   -0.684880      2       10
    12  H      3.582160   -0.189940   -1.593220      2       10
    13  O     -0.915910    2.704790    0.798780      1       14      15
    14  H     -0.227040    2.580070    1.425850      2       13
    15  H     -0.873980    3.617720    0.468210      2       13
    16  O     -2.842850   -1.748750    0.001430      1       17      18
    17  H     -2.928060   -2.324220   -0.815380      2       16
    18  H     -2.401870   -0.876300   -0.234650      2       16
